Pulp-beater.



S. MITCHELL.

PULP HEATER. APPLICATION FILED IAN-25,1918.

Patented Sept. 3, 1918.

I mva mon 3,1531%? mamas...

s msmmm Shimm amount, or new You, H. Y.

I germane-mun.

"To allcvkom it oonce rhi i citizen of the United States,

a full, clear, and exact Be it known that I, SIDNEY MITCHELL, t, residing at New York; in the county Of'NGW of New York, have-invented certain new and useful Improvements in Pulp-Beaters;

and I do'h'ei'eby declare the following to he description of the invention, such as will enable others skilled in theart to which lbtPl'JBlhEtlllS to make and use the saine, reference being had to the accompanying drawings, and to characters of the carifying on I I I Theiiinvention has'for its pi'lncipal ob ect it, $133131; orfthis Specification.

vthe operation of the mach N9 The invention consists,

i'efercnc' marked thereon, which form a.

ie pi esen't invention relates,

turing industry; and the inventionhas reference, more particularly,

terial tov produce 2i proper pulp requisite to of papermanufacture. i

to provide a means in connection with the beater mechanism" for separating and; I diechgirgnig such portions of the raw material r .Whl Nae: beenproperly reduced, wh'i1e awaiting there'duction of the more resistant portions of the same; thereby saving both time andenergy.

The inyenti'on hoe for" a further to provide 2'; novel construction of automatic A separating mca'ne, per se, for hre'akers -or heaters, vcompi-i'eing a catching lmsin, ;a screening orgruting device upon Whichthe wttr'lf basin overflows, und discharge "'thythefscrening oi gratin d the properly f'r iced h iough the letter fijom 'the ing t Other ohjects' of the present invention,

not atf'this time "more perticulh 'ly enumer noted, will, be clearly understomi 'g'rom-the' fol L lowing detailed description of.

York and State- I generally, i tot improvemente i in" pulpheating-machines COIflI'IlOHliYBIYzlPlOYQCl in the paper manufacto an improved oonstruction of bettter or breaker adapted to I 'beat and tease out the fibers of the inaend the novel and assieting tub to provide the desired continhous 4 culatory' pas'eageitherfein.

"the same bein ofi-isaid hood 7 Arranged beneath the. 0 werdly projecting excerier jp tien ed inafter forth; and'the invention consists furthermore, in the novel arrangements and combinations of the" various devices and parts, as well as in the, details of the constructionofthe said parts, all of which will be 'hereinefter more fully described andthen finally defined inthe uppend'ed c aims. The inveiition is clearly illustrated in the accompanying drawings, in hi'oh:-.

I flpeclflcntlon of Lette q intent. i. 'Pa'tented Sept. 3; 1918- I Application filed lumen 25, 1610. went. clean.

:novel constructionof better or breaker here- Figure 1 is a pla-n'view of a. heater or breaker Inside according to and embodying the principles of my present infieutiom'a portion of the hood in'cloeing'v the beateiii'oll and one side-of-the heater tub being broken ewayz' Fig. 2is a vertical longitudinal section of the same, taken on line 2&2. .insaidFig. 1.

Similar chejracterls of reference a'rcgcmployed in all of the hereinahoye described views, to indicate corresponding parts. Referring; now "to the said d i'a vings, the reference "character- 1 indicates the usual beater tub in Whiehthe beetct mechanism separating devices are mounted, and in which the rawinute' iel to be pulped and the Witter" fen-softening theisfame its circulation 'eto'und the tuh' to the"'"bea"terroll, "is received. Ai nu nged Within 'the tuh' is the usual mid-feather 2 which termihflteezlehort of each end f the tubnand which serves to pitopei'ly divide Mounted between one sidewell ole" said t1 and said midfeat-he]; 2 is the usual bewt'er roll 3 having I A; t'i'enevei'sely, jonrnaled driving shafthfiis mounted in connection with said 'tilbulpon which the roll-31S fixed,

power than u I of base-plate e; withwhieh the heater-1-oll cofipe'retes I I material in'tothe required pii lp". "Extending rel 1s en'incl'oeing; I I I aifsuita 1 d 'poeed tmneverse opening in hich hituathdi a *horizhntellj" egte hr in beating out the, raw

iteelf driven by I eny' uitabIe s's'ion. means," [(not'. shown) ri eng'ed bufesith s'aid beet'etffrollifi ispany ovzle the expos 'edfupp the beater g ha-sin -QQ-the Iettet heihg'so arrange as to Project zit one fs'ide-into' the interior f thB q eat'rh-hasin l is a diseharg trough or eonduitlt) into whieh said eatch-hasin overllows. Haid diseharge trough or eonduit It) extends in a downwardly sloping inelinalion lale'al :u-i oss the tuh I. so as to dis eharge the pulp delivered thereto exteriorly til the tllli l.

Heeured to the outer lip of the exterior portion of said eateh-basiu J are a plural-' il v ot elosely spae'ed liars 11, The said hars H are iuelined downwardly and olu,\\'ardl v from the lip of said eatelehasin 9 so as to extend late ally aeross and; above the. diseha gge trough it) whieh extends heueat'h tho same. the outer free: end of said bars ll ti\'t'lll:lll; {lll J' the interior of the tub l.

The ret'erenee eha'arter lfhsljggltes a. water pipeleading from any suitahlesouree of water supply. (ouneeled with the lower end of said water pipe 12 he a suitahle litting or eoni'ieetion 1 1. are a pair of spray heads or perforated diseharge nozzles lla'nd" 15. The diseharge nozzle H is disposed to extend longitlulinally over said eatel1 hasin it while the diseharge nozzle 15 is disposed to extend longitudinally over said dist-harge trough above said grating 'fdr n'ied lrv lhobars ll.

Tn operating the deviee the tuh l is filled with water, and the an pitlped 'is deposited therein. The. heater roll it is then set in motion, The rotation of the; heater roll arts as a paddle upon the water in the tnln eausing the'same to cirrulate. around the tub in the path defined hy the walls of the tuh and the midt'eatlier 2. "Th-g eireulatory How of thewa 1' thus set up i-arries the raw material hetweeu tho heater roll 3 and the hase-plate t) in the. usual niannen therel rv eausing the red-netion of the. raw material into a lihrons mass, whieh with the water in whieh it is e; rried prodnees the pulp desired. The. nature. of the raw material is sueh that almost ,lunne diat-elysome portions thereof are re'dueod to the. nceessary pulpy mass, whilev other portions. being more resistant. are not frtalneed. until. duriu,' the "(:ireulatzion hrough the tub; they aretjitl l'lt'tlkltlliy hes intoeontaet with the healer roll. in nost. eonstruetions of lieate|'s, .as hereloforo it is neeessary to permit theprei perly "(til eed portions of the raw material to mtinne. in eireulatiou with the rest ofzfthe. ,yass until the whole hateh is entire. 4? i need. This ueta-ssitv entailshoth a loss of timeand energy. with my present eoustrnetion of novel separating means in enmhination with the heater proper, however, the properly redured I} qpot'ped portions of the. raw nuiterialau'e iila large part, separated from the more l't. anl mass and diseharged eontinuonsly t' lu'the hood ready for use, leaving the nlflia' resistant mass for Iurruertreatment, un til it too is gradually material to he.

the.

latter overflows upon the downwardly mellned grating or sereeu provided h v the.

bars 11. The diseharge nozzle. 15 emits a. spray of water upon said grating or screen. thus bathing the bars It in t 'r'u-l lin; streams of water, ant latendiug touvash downwardly through the interslieeslwt ween the liars ll such portions of the pulp as are. line enough to pass therethrough. and whit-h are there fore ready to he. removed from the heater. The pulp thus passed through the. grating or screen falls into the diseharge trough l0, and from thence. is disehag'ed exterior of the heater. k

Ifthere i deposited within the eate-h hasiu 9 any pulp or raw material not sullieiently beaten up and redueed so as to he lit for diseharge. ittoo overflows from the eat('li-hasin upon the gratin; l'ormed it) the hars 11, but being too coarse to pass through theiuterstiees hetweeu the ha rs it slips down the. iuelined pitch of the liars .iu supported relation thereto. the water from the nozzle 15 tending to assist it uponits downward sliding movement. and at the same time tending to prevent any mass thereof stirk ing to the bars ll so as to ohstruetor elog iuterstiees lit-tween the hairs. fUpon reaehing the ends of the hars 'tl, this too coarse material l'alls therefrom hack-into the. tub 'l and is'agaiu earried into eontaet with the heater roll for Further treatment until properljv redueed. I

It will thus be apparent. that thenhove deserihed apparatus while e'.\"eet din al siinple, alul requiring no nua-hanieallv moved parts. with the exeeplion of the heater roll.

3, is nevertheless very ellieient in automati- 'all separal|n; redueed lrom unredueed pulp. so as to render possihle a eontinuous illlltllllillll} diseharge of properly pulpeil material from the heater or hrealcer without loss of either time or energy.

invention to exact errangements and overflows,"'e eting com rising e series of combinetiond of the devices and'parts as closel space here exten in from the outer e set'forth in the'toregoin specification, nor lip of said cetch-besin in ownward incli- 7 do I. confine*1nyself to t e exact, details' of nation oversaid discharge trough, the outer e the constructionoi said parts as illustrated free. ends ;of said bars overhanging the intein the accompanying drawings. rior of sold tub, and means for flooding we- 1 [claimster over 'aid barsg' 1.; In a deyice'of the kind describedzilge 5.-I n'e'deVice of 'the kind described, atub, tub a. beaf'erfroll therein, a hood including, "a heater roll therein, a hood inclosing said 10' sai beater r011 having a, discharge .openheater roll having a dischnr e'bpening th'erex ing therein, a catch-basin horizontally. disin, e ceteh-baein horizontel disposed withposed within safiddischerge-opefling so that. in midfliseherge opening so that one side one ide' thereof projects iateriorly of the thereof projects interiorly of. the hood adh 'ed'acenttoeeid beeter'roll while the. jecent'to said beetei roii while the other 15 cthenpi thereof projects exteriorl 'oi the side thereof projects exteriorly of the hood, e diecherge trough beneeth' efe'x' te a discharge trou h beneath the exterior porrioj'r po ion of Skidzcatsh-basih into which tion of said cetcqi-hesin into which the letthe lettiar-overfiowgenda screeningdevice ter 'overfiows a n tingcomprisin a series {attending oversaid trouglg. 1 i A of closely's extending oxn the 2. In a device-of the 'nd' described, a outer 11p 0 said eetch-besin'indownifird b a heater roll therein, a hoodinclosing inclination over saididisch 'gfl trough, the

Beater roll; havin a discharge opening outer free ends of soidbar's overhanging the so Eeijjein, a catcli-basinfiiorizonteliy disposed interior of said tub,'--ji ild meexiefor flooding thinsaid dischar opening so that one water. over said bore -comprising a spray ide-ithereof prbjec v interiori of the hood head or, nozzle -diepqmed' above and extend decent to said heater roll 'w ile the other ing across said series of bars, and a water e thereof projects exteriorly of the hood, supply pipe with which eaidsprey head or as isch'erg'e trough heneathithe enteri'orpornozzleis connected.

o of eaid catc l-basin into which the let- 6. In edevice cf-the kinddescrihed, a. tub, 1

rflowe, e. screening device extending a, beater-roll therein, a. hood iinclosing said trough, and means for flooding beater --roll hevin e discharge opening 'ver-said sereeningdevice. therein, a catch asin horizontally dis- 9o "device of the kinddescribed, etub, posed within said discharge opening so roll";therein,.a, ho9d incloeingt-saidthat one side thereof projects interior'ly llfjhjVfligfldiSChE-YFB op'eningthele of the hood adjacent,- to said heater roll horizo iypisposed withwhilethe otherside thereof, projects exisehcrge openi'g sikthet one side terior no'ects interior-1y 0' -.thehood add-{bwt P-rolL-while the other 2' rejects exterioriyof the'hood,

' fixt r 'mr the exterior. rtion 0 said catch l the b tter overflows, a grab closely specedbers he titer lip of said catchtion over seid dis,- 10o of seid tub, a Sod whore and:

A of bars, a;

1-, 102216 disposed 10$ 'oiiofc said catcha 5 tell therein n hbodixicloinfifl 11min ii isobar jopcuing l 'i Pr me y 15 discharge so th frprojeets in ri ii 1yf the hood, n dischar e trough be as I 

